A top beam structure with integrated lifting lugs
The integrated lifting lug top beam structure solves the problems of insufficient load-bearing capacity and increased transportation size of ultra-heavy equipment lifting lugs, achieving safe and efficient lifting and transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZHONGTAI CRYOGENIC EQUIP CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, the lifting lug structure of ultra-heavy equipment has insufficient load-bearing capacity and increases the transportation size when hung on the top of the container, which poses a safety hazard.
Design an integrated lifting lug top beam structure, construct a multi-path load transfer system through box-type beam, internal reinforcing ribs and diagonal bracing, so as to evenly distribute the lifting force to the entire box frame, and integrate the lifting lug plate into the box beam, with only the lifting lug head exposed.
It can safely withstand extreme loads of hundreds of tons, avoid stress concentration, reduce the increase in transportation size, simplify on-site construction, and improve hoisting safety.
Smart Images
Figure CN224278406U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a top beam structure for large box-shaped structures, specifically a top beam structure with integrated lifting lugs, belonging to the field of large steel structure hoisting technology. Background Technology
[0002] As production scales up, the size and weight of ethylene cold boxes increase dramatically, reaching hundreds or even thousands of tons. For hoisting operations of such ultra-heavy equipment, especially for integral hoisting, the lifting lug structure at the top is crucial for ensuring safety.
[0003] In existing technologies, the top lifting lug structure used for such cold boxes typically involves welding the lug plates to a regular beam at the top of the box. This design results in an unclear force transmission path, easily leading to significant stress concentration in the welded area, making it difficult to withstand extremely large loads and posing safety hazards. Furthermore, the external attachment of the lug plates to the top of the box increases the overall transport dimensions of the cold box.
[0004] Therefore, how to design a new type of top beam structure that can meet the safety requirements of ultra-large loads and integrate with the box frame in terms of structure, thereby reducing the increase in transportation size caused by the lifting lugs, is a key technical problem that urgently needs to be solved in this field. Utility Model Content
[0005] Based on the above background, the purpose of this utility model is to provide a top beam structure with integrated lifting lugs, which solves the problems of insufficient lifting load-bearing capacity of the top beam structure in the prior art and the increased transportation size caused by the external hanging of the lifting lug plate.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0007] A top beam structure with integrated lifting lugs is used for installation on the top of a large box-shaped frame. The top beam structure includes a hollow box-shaped beam, lifting lug plates, multiple internal reinforcing ribs disposed inside the box-shaped beam, and at least two diagonal braces. The box-shaped beam is formed by welding together a top plate, a bottom plate, and two side plates. The lifting lug plates have a lifting lug base that is at least partially accommodated inside the box-shaped beam and a lifting lug head that extends outside the top plate. Both the top plate and the bottom plate have slots for the lifting lug plates to pass through. The internal reinforcing ribs are welded between the lifting lug base and the inner wall of the box-shaped beam. The lower end of the diagonal brace is used to fix and connect to the frame of the large box-shaped frame, and the upper end of the diagonal brace is welded and connected to the lifting lug base.
[0008] The lifting lugs and box-type beams, combined with their internal reinforcing ribs and external diagonal braces, form a multi-path load transfer system that can safely and evenly distribute the huge concentrated lifting force to the entire box frame.
[0009] Preferably, the head of the lug has an outwardly convex arc-shaped profile, the two sides of the lug base that connect with the head of the lug form a continuous and uninterrupted inwardly concave arc-shaped transition profile, and the lower edge of the lug base has a multi-beveled profile.
[0010] The concave, arc-shaped transition section effectively alleviates stress concentration at the neck of the lug, preventing fatigue cracks under enormous tensile force, while the multiple chamfers at the lower edge provide the necessary space for welding with the diagonal brace.
[0011] Preferably, the head of the lifting lug is provided with a lifting hole for attaching a hook or sling.
[0012] Preferably, the inner reinforcing ribs include a central reinforcing rib and side reinforcing ribs, with the central reinforcing ribs disposed adjacent to the central axis of the lug plate and the side reinforcing ribs located on both sides of the central reinforcing rib.
[0013] Preferably, the number of central reinforcing ribs is at least two sets, and they are symmetrically arranged about the central axis of the lug plate. Each set of central reinforcing ribs consists of two ribs, which are symmetrically arranged on both sides of the lug plate. The number of side reinforcing ribs is at least four sets, and they are symmetrically arranged about the central axis of the lug plate. Each set of side reinforcing ribs consists of two ribs, which are symmetrically arranged on both sides of the lug plate.
[0014] By symmetrically and arraying the number and layout of the stiffeners, it is possible to ensure that the load is uniformly and balancedly transmitted inside the box girder, avoiding local overload or torsion caused by uneven stress.
[0015] Preferably, the connection points between the base of the lifting lug and the top plate, the base of the lifting lug and the bottom plate, the inner reinforcing rib and the base of the lifting lug and the box-type beam, and the connection points between the diagonal brace and the base of the lifting lug are all bevel welded connections.
[0016] Compared with the prior art, the present invention has the following advantages:
[0017] This invention discloses a top beam structure with integrated lifting lugs. By integrating the lifting lug plates with the top beam into an internally reinforced box-shaped beam, and cooperating with the diagonal braces connecting the base of the lifting lugs, an efficient load transfer network is constructed. This decomposes the huge concentrated lifting force and evenly transfers it to the box frame through multiple paths, effectively avoiding stress concentration. It can safely withstand ultimate loads of hundreds of tons. Furthermore, only the lifting lug head protrudes from the top of the box-shaped beam, reducing the size of the lifting lug plate protruding outside the top beam and minimizing the increase in transportation size caused by the lifting lug plate. The top beam structure of this invention can be processed and welded as an independent module in the manufacturing plant, and then welded to the box frame on site, further reducing transportation complexity and simplifying on-site construction difficulty. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1 This is an overall schematic diagram of a top beam structure with integrated lifting lugs according to the present invention;
[0020] Figure 2 This is a partial structural schematic diagram of a top beam structure with integrated lifting lugs according to this utility model;
[0021] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of section AA;
[0022] In the diagram: 1. Box-type beam; 2. Lifting lug plate; 3. Internal reinforcing rib; 4. Diagonal brace; 5. Box frame; 101. Top plate; 102. Bottom plate; 103. Side plate; 201. Lifting lug base; 202. Lifting lug head; 203. Lifting hole; 301. Central reinforcing rib; 302. Side reinforcing rib. Detailed Implementation
[0023] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.
[0024] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.
[0026] An embodiment of this utility model discloses a top beam structure with integrated lifting lugs for installation on the top of a large box frame. For example... Figure 1 As shown, the top beam structure includes a hollow box-shaped beam 1, a hanging lug plate 2, multiple internal reinforcing ribs 3 set inside the box-shaped beam 1, and two diagonal braces 4.
[0027] like Figure 2 and Figure 3 As shown, the box-type beam 1 is formed by welding together a top plate 101, a bottom plate 102, and two side plates 103 to form a hollow beam with a rectangular cross-section. Both the top plate 101 and the bottom plate 102 have slots for the lifting lugs 2 to pass through.
[0028] The lifting lug plate 2 has a lifting lug base 201 partially housed within the box-shaped beam 1 and a lifting lug head 202 extending beyond the top plate 101, with the lifting lug head 202 positioned above the lifting lug base 201. The lifting lug plate 2 passes vertically through pre-drilled slots in the top plate 101 and bottom plate 102. The upper half of the lifting lug base 201 is housed within the hollow cavity of the box-shaped beam 1, while the lifting lug head 202 extends upward beyond the top plate 101. The lifting lug head 202 is provided with a lifting hole 203 for attaching a hook or sling during lifting operations.
[0029] The lifting lug head 202 has an outwardly convex arc-shaped profile. The two sides of the lifting lug base 201, where they connect to the lifting lug head 202, form a continuous, uninterrupted inwardly concave arc-shaped transition section. The lower edge of the lifting lug base 201 has a multi-beveled profile. The inwardly concave arc-shaped transition section effectively alleviates stress concentration at the neck of the lifting lug, preventing fatigue cracks under high tensile force. The multi-beveled lower edge provides the necessary space for welding with the diagonal brace 4.
[0030] The inner reinforcing ribs 3 are welded between the base 201 of the lifting lug and the inner wall of the box-shaped beam 1. The inner reinforcing ribs 3 include a central reinforcing rib 301 and side reinforcing ribs 302. The central reinforcing rib 301 is located adjacent to the central axis of the lifting lug plate 2, and the side reinforcing ribs 302 are located on both sides of the central reinforcing rib 301. There are two sets of central reinforcing ribs 301, symmetrically arranged about the central axis of the lifting lug plate 2, with two ribs in each set, symmetrically arranged on both sides of the lifting lug plate 2. There are four sets of side reinforcing ribs 302, symmetrically arranged about the central axis of the lifting lug plate 2, with two ribs in each set, symmetrically arranged on both sides of the lifting lug plate 2. These inner reinforcing ribs 3 form a load transfer network inside the box-shaped beam 1, evenly transferring the enormous pressure and tension to each wall panel of the box-shaped beam 1 when the lifting lug plate 2 is under stress, while preventing the box-shaped beam 1 itself from crushing, bulging, or twisting under enormous stress.
[0031] The lower end of the diagonal brace 4 is used to fix and connect the frame of the large box, and the upper end of the diagonal brace 4 is welded to the base of the lifting lug 201.
[0032] The lifting lugs 2 and the box beam 1, together with their internal reinforcing ribs 3 and externally connected diagonal braces 4, form a multi-path load transfer system that can safely and evenly distribute the huge concentrated lifting force to the entire box frame 5.
[0033] To ensure ultimate load-bearing capacity and improve safety, the key load-bearing connection points, namely the connection between the lifting lug base 201 and the top plate 101, the connection between the lifting lug base 201 and the bottom plate 102, the connection between the inner reinforcing rib 3 and the lifting lug base 201, and the connection between the box beam 1 and the diagonal brace 4 and the lifting lug base 201, are all bevel welded connections. This ensures that when the entire structure is subjected to hundreds of tons of tensile force, all weld points can reliably transfer the load and will not become weak links in the structure.
[0034] The top beam structure constructs an efficient load transfer network, which decomposes the huge concentrated lifting force and evenly transfers it to the box frame 5 through multiple paths, effectively avoiding stress concentration and enabling it to safely withstand ultimate loads of hundreds of tons.
[0035] Furthermore, only the head 202 of the lifting lug 2 protrudes from the top of the box beam 1, reducing the size of the lifting lug 2 protruding outside the top beam and reducing the increase in transportation size caused by the lifting lug 2.
[0036] In addition, the top beam structure can be processed and welded in the manufacturing plant as an independent module and transported independently from the box frame 5, reducing the overall transportation size. During on-site installation, it is only necessary to hoist this independent module to the top of the box column and complete the welding connection, thereby simplifying the workload of complex high-altitude welding on site.
[0037] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A top beam structure with integrated lifting lugs for installation on the top of a large box frame, characterized in that: The top beam structure includes a hollow box beam (1), a lug plate (2), multiple internal reinforcing ribs (3) disposed inside the box beam (1), and at least two diagonal braces (4). The box beam (1) is formed by welding together a top plate (101), a bottom plate (102), and two side plates (103). The lug plate (2) has a lug base (201) that is at least partially contained inside the box beam (1) and a lug head (202) that extends outside the top plate (101). Both the top plate (101) and the bottom plate (102) have slots through which the lug plate (2) passes. The internal reinforcing ribs (3) are welded between the lug base (201) and the inner wall of the box beam (1). The lower end of the diagonal brace (4) is used to fix and connect the frame of the large box body, and the upper end of the diagonal brace (4) is welded to the lug base (201).
2. A top beam structure with integrated lifting lugs according to claim 1, characterized in that: The lug head (202) has an outwardly convex arc-shaped profile, and the two sides of the lug base (201) connected to the lug head (202) form a continuous and uninterrupted inwardly concave arc-shaped transition profile. The lower edge of the lug base (201) has a multi-beveled profile.
3. A top beam structure with integrated lifting lugs according to claim 1, characterized in that: The head (202) of the lifting lug is provided with a lifting hole (203) for attaching a hook or sling.
4. A top beam structure with integrated lifting lugs according to claim 1, characterized in that: The inner reinforcing rib (3) includes a central reinforcing rib (301) and a side reinforcing rib (302). The central reinforcing rib (301) is located adjacent to the central axis of the lug plate (2), and the side reinforcing ribs (302) are located on both sides of the central reinforcing rib (301).
5. A top beam structure with integrated lifting lugs according to claim 4, characterized in that: The number of central reinforcing ribs (301) is at least two sets, and they are symmetrically arranged about the central axis of the lug plate (2). Each set of central reinforcing ribs (301) consists of two ribs, which are symmetrically arranged on both sides of the lug plate (2). The number of side reinforcing ribs (302) is at least four sets, and they are symmetrically arranged about the central axis of the lug plate (2). Each set of side reinforcing ribs (302) consists of two ribs, which are symmetrically arranged on both sides of the lug plate (2).
6. A top beam structure with integrated lifting lugs according to claim 1, characterized in that: The connection points between the base of the lifting lug (201) and the top plate (101), the base of the lifting lug (201) and the bottom plate (102), the inner reinforcing rib (3) and the base of the lifting lug (201) and the box beam (1), and the diagonal brace (4) and the base of the lifting lug (201) are all bevel welded connections.